A study of dual polymer conditioning of aluminum-based drinking water treatment residual
|Title:||A study of dual polymer conditioning of aluminum-based drinking water treatment residual||Authors:||Ma, W.
|Permanent link:||http://hdl.handle.net/10197/3171||Date:||Jan-2007||Online since:||2011-09-23T13:59:35Z||Abstract:||Conditioning of an alum-based water treatment sludge by single and dual polymers was investigated in this study. Capillary suction time (CST), specific resistance to filtration (SRF) and settling rate of conditioned sludge were used to evaluate the sludge dewatering characteristics. Sludge dewaterability resulting from single and dual polymer conditioning were compared for the purpose of exploring the validity and effectiveness of dual polymer conditioning strategy. Unlike activated sludge derived from wastewater treatment, results from this study have demonstrated that conditioning of the alum sludge by the combined use of an cationic polymer (FO-4140) followed by an anionic polymer (LT-25) does not exhibit considerable advantage in further improvement of sludge dewaterability with comparison of single polymer conditioning. This study supports the view that for alum-based water treatment sludge, inter particle bridging seems to be the dominative mechanism and the charge neutralization plays a less important role in the conditioning process. In addition, an intrinsic relationship between CST and SRF was deducted and tested via the experimental data obtained from the study.||Funding Details:||Not applicable||Type of material:||Journal Article||Publisher:||Taylor & Francis||Journal:||Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering||Volume:||42||Issue:||7||Start page:||961||End page:||968||Copyright (published version):||Taylor & Francis Group, LLC||Keywords:||Alum sludge; Capillary suction time (CST); Conditioning; Dewaterability; Polymer; Specific resistance to filtration (SRF)||Subject LCSH:||Water treatment plant residuals
|DOI:||10.1080/10934520701370261||Other versions:||http://dx.doi.org/10.1080/10934520701370261||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Centre for Water Resources Research Collection|
Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection
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